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E11.638 Type 2 diabetes mellitus with other oral complications

ICD-10-CM · CMS code reference

E11.638 is type 2 diabetes with a mouth (oral) complication other than gum disease. If periodontal disease is documented, use E11.630.

Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

Includes

  • diabetes (mellitus) due to insulin secretory defect
  • diabetes NOS
  • insulin resistant diabetes (mellitus)

Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)
  • gestational diabetes (O24.4-)
  • neonatal diabetes mellitus (P70.2)
  • postpancreatectomy diabetes mellitus (E13.-)
  • postprocedural diabetes mellitus (E13.-)
  • secondary diabetes mellitus NEC (E13.-)
  • type 1 diabetes mellitus (E10.-)

Use additional code

Add a second code for the following, when documented.

  • code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85)
  • insulin (Z79.4)
  • oral antidiabetic drugs (Z79.84)
  • oral hypoglycemic drugs (Z79.84)

Related codes

Common questions

Is E11.638 a billable code?

Yes. E11.638 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. About BillingBrief and our sources.